1. Implement function containing local variable with hoisting.

2. Commit example to github.

3. Use eslint to find this problem and --fix flag to remove it.

4. Fix example manually and commit it to github.

Prepare two implementations of `inc` function:

1. First with signature `inc(n: number): number`,

call example: `let a = 5; const b = inc(a); console.dir({ a, b });`

2. Second with signature `inc(num: Num)` where `Num` is object with field `n`,

so function will change field of the object passed by reference,

call example: `let obj = { n: 5} ; inc(obj); console.dir(obj);`

1. Prepare array with values of different type.

2. Prepare collection (object) with type names as keys and `0` as values,

example: `{ number: 0, string: 0 }` and so on for all types.

3. Iterate array with `for..of` loop and increment occurrence counter there

to get collection of types occurrences count for all types in array.

4. Modify this example: remove all keys from initial collection literal and

add all keys dynamically from the loop.